Overweight Bridge-Formula Heavy Duty Flatbed
The Overweight Bridge-Formula Heavy Duty Flatbed is an engineered heavy-haul commercial transport semi-trailer designed specifically to meet strict international Bridge Gross Weight Formula requirements while transporting super-heavy break-bulk cargo, transformers, industrial pressure vessels, and heavy infrastructure components. Built with high-strength Q345B/Q550 structural steel and continuous automated submerged-arc welding, it features an extended outer bridge wheelbase with optimized axle-group spacing (including 4-axle, 5-axle, or multi-axle configurations with steerable lift axles) to spread concentrated gross vehicle weights evenly over road bridge structures. Equipped with reinforced main longitudinal girders, heavy-duty 13T–16T commercial axles, and robust mechanical or pneumatic air suspension, it provides maximum payload legality, reduced pavement stress, and superior heavy-haul stability across highway and interstate transport networks. Fully certified under ECE, ISO9001, CCC, CE, DOT, and SGS standards.
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Product Details
Technical Specifications
Model NO. : Customized
Type : Semi-Trailer
Load Capacity : 60T/80T/100T
Condition : New
Grade : Heavy Duty / Heavy Haul / Highway Compliant
Shape : Extended Wheelbase Bridge-Formula Heavy Flatbed
Origin : Shandong, China
Production Capacity : Customized
Certifications : ECE, ISO9001, CCC, CE, DOT, SGS
HS Code : 8716399000
Overall Dimensions : 13760-16000 x 2500-3000 x 1500 mm
Platform Dimension : Customized Extended Platform
Wheel Base : 8500 + 1310 + 1310 + 1310 mm (Customized Axle Spacing for Bridge Formula)
Tread : 1820 mm / 2050 mm
Axle Number : 4 / 5 Axles (Optional Front/Rear Self-Steering or Pneumatic Lift Axle)
Axle Brand : FUWA / BPW / HuaJin Heavy Duty
Axle Capacity : 13T / 16T
Tire Number : 16 / 20
Tire Specification : 12R22.5 / 11.00R20 / 385/65R22.5
Tire Brand : Triangle / Double Coin / Linglong / Chaoyang
Rim : 9.00-22.5 / 8.5-20 / 11.75-22.5
Suspension : Heavy Duty Air Suspension with Lift Axle / Multi-Leaf Spring Suspension
Leaf Spring : 10pcs / 12pcs (90x16mm / 100x16mm)
Brake System : Dual-Line ABS / EBS Anti-lock Braking System
ABS Brand : WABCO / Kemi / Haldex
Self-dumping : Not Self-dumping
Material : High-Strength Steel (Q345B/Q550)
Main Beam Height : 520mm / 550mm
Upper Plate : 18mm / 20mm
Down Plate : 20mm / 22mm
Middle Plate : 10mm / 12mm
Welding : Automatic Submerged-Arc Welding
Platform Floor : Thickened Checkered Steel Plate 4mm / 5mm
Landing Gear : 28T Two Speed Heavy Duty / JOST / FUWA
King Pin : 50#(2") / 90#(3.5") Interchangeable Heavy-Duty
King Pin Brand : JOST / FUWA
Twist Lock : 12pcs Integrated Multi-Position Container Locks
Spare Tire Carrier : 2pcs
Tool Box : 1pcs Heavy-Duty Lockable Steel Box
Electric System : 24V, 7 Pin Socket, LED Light
Wiring Harness : 6 Lines
Painting : Sand Blasting + Primer + Two Coats Polyurethane Coating
Colour : Optional
Warranty : Main Beam 3Y / Axle 1Y
Package : Nude / Container / Ro-Ro
Delivery Time : 25-30 Working Days
Payment Terms : T/T, L/C
Key Structural & Performance Features
1. Bridge-Formula Wheelbase Architecture & High-Tensile Spine
- Optimized Axle Spacing Geometry: Precision-engineered axle group spacing and extended inner/outer bridge lengths designed to conform with federal and international Bridge Weight Formulas, preventing highway overweight citations by spreading total gross vehicle weight ($W$) over a longer distance ($L$).
- Q345B/Q550 Reinforced Structural Spine: Extra-deep main longitudinal girders (up to 550mm) fabricated with extra-thick flange plates ($20\text{mm}$ upper / $22\text{mm}$ lower) using automated Submerged-Arc Welding (SAW) to prevent frame sagging under extreme concentrated center loads.
- Multi-Axle & Lift-Axle Integration: Configured with 4 or 5 axles, featuring optional pneumatic lift axles or self-steering axles to lower tire scrub, improve turning radius when empty, and optimize legal load distribution when fully laden.
2. Axle, Suspension & Pneumatic Braking Systems
- Heavy Commercial Multi-Axle Setup: 4 or 5 commercial-grade heavy-duty axles (FUWA / BPW / HuaJin; 13T/16T capacity per axle) calibrated for high-capacity weight distribution over long-haul heavy transit routes.
- Heavy Air / Leaf Spring Suspension: Heavy-duty pneumatic air suspension with automatic height leveling valves or severe-duty multi-leaf springs (12pcs, 100x16mm) engineered to protect road infrastructure and cushion delicate heavy machinery.
- Advanced EBS/ABS Braking System: High-response WABCO / Haldex EBS/ABS air braking system delivering precise load-sensing braking force to each axle group for maximum stopping stability.
3. Operational Accessories & Safety Setup
- Heavy-Duty Landing Gear & Kingpin: Reinforced 28-Ton two-speed landing gear (JOST / FUWA) paired with interchangeable heavy-duty 50#(2") or 90#(3.5") kingpins for fast, reliable tractor coupling.
- Electrical & Lighting Package: Weatherproof 24V LED lighting system featuring side marker clearance lights spaced along the extended frame length for total highway safety compliance.
- Corrosion Protection: Surface thoroughly cleaned via shot-blasting, coated with anti-rust primer, and finished with double-coated polyurethane topcoats for resistance against harsh weather exposure.
Commercial & Logistics Terms
- Warranty Policy: 3-Year warranty for the main structural chassis frame; 1-Year warranty for axles.
- Delivery Lead Time: 25 – 30 working days upon order confirmation.
- Packaging & Shipping: Nude packing; shipped via Container, Ro-Ro vessel, or Bulk Cargo ship.
- Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit).
